For Pomeranian WOP the first of April, apart from a few clashes with local police and one short clash on a bridge, was a calm day in which all operational tasks were performed without any major problems. Both islands, Rügen and Usedom, fell in a couple of hours, and around 15:00 a state TV crew was already on the islands, filming footage that was to be used for propaganda and the evening message to the nation.
In turn amongst civilians in Poland all sorts of rumours started to spread, when rapidly trains were stopped to allow transport for the army, telephone network was periodically and locally switched off, especially in border areas. In turn the sudden withdrawal of all passes for the army and the rapid announcement on radio and television about the introduction of food rationing only deepened the aura of fear and confusion.
But not everywhere was so peaceful, in the border town of Terespol on the border with Russia not far from it, the local 23 Chełm WOP detachment since the morning train crash on the bridge over the Bug River led a fierce and desperate defense of the town together with the local Militia station with the Russian Garrison of Brest Fortress.
Unfortunately for the Poles, the event followed the border as marked on the map, and the Brest Fortress was entirely within the territory of the USSR, because the border on this section bounced off the river and passed right under the fortress walls before returning back to the river.
Although the Poles learned about the whole affair much earlier from the Russians, this advantage was not exploited very well and now this negligence avenged on them. Although they sent to help the town one of the two infantry companies kept in reserve for the 23rd Chełm WOP, this was a drop in the ocean of needs.
The garrison of the fortress was huge and well equipped, after all it was one of many in the network of fortresses keeping the conquered Poland in check. Lieutenant General Wlodzimierz Laiming had under his command enough men and solid armaments to win with limited losses against WOP soldiers, helping Militiamen and armed in desperation volunteers from the area.
Above all, it had artillery while its enemies had to rely solely on infantry equipment.
Therefore, when on the island of Usedom the landing of more barges was taking place, in Terespol defenders were having the first clashes with Russian infantry sent for reconnaissance. Although they were a massacre for the Russians, they quickly retreated behind the line of a small river, not wanting to be caught by the Russian artillery.
For the Russians, however, this battle reconnaissance gave a clear picture of the advantage in firepower on the side of the unknown enemy, although Polish inscriptions and the kidnapped inhabitants from the eastern and approaching Terespol Fortress allowed them to know that their opponent were Poles.
Where and why they were here, along with their strange clothes, were interesting questions, but Laiming decided that Terespol should be secured first, and then sought answers. He quickly mobilized his four infantry regiments forming the Reserve Brigade and threw them at the few defenders in the strength of two companies.
The defenders, dispersed in three directions, conducted delaying actions trying to give time to evacuate the inhabitants, which was not easy since they could only put a platoon against each infantry regiment. And it was necessary to defend from three sides and to hold the railroad station at the same time.
Unfortunately the command in Chełm could not send more reinforcements, the second infantry company had to be on standby to have something to throw at the border in other sections.
Well, the border with the former USSR wasn't as urgently and heavily manned as that with Germany and Czechoslovakia, nobody was stupid enough to run away to the heart of darkness, right?
The first sign that the Russians are attacking was the hour-long shelling of Terespol by artillery fire in the Fortress, then when the shelling stopped the Russian infantry moved to the attack, which used the artillery fire as cover for their own preparations.
Then, at 8:00 a.m., the enemy moved to attack in three strikes. Laiming to the firepower of the defenders decided to stretch the Polish defense. From the north along the tracks struck 189th Infantry Regiment going straight to the train station to Terespol, the whole thing was squeezed and hugged along the tracks that went through swamps which defending platoon used to the disadvantage of the Russians.
Using the advantage in firepower he stopped the entire regiment on the tracks and massacred the battalion walking along the tracks within the first 15 minutes of the battle, forcing the Russians to immediately send another in its place. However, Russian Colonel Mikhail Poroshenko sent a second battalion through the swamps south of the tracks in an attempt to flank the Polish platoon.
The latter had more luck, but clashed with a platoon sent by the local militia to cover the town from the swamps, just in case. Fortunately for the Russians, this platoon was less well armed, mainly with old Mosin rifles and submachine guns, so the attack went forward despite noticeable losses.
The commanding officer of the platoon, Civilian Militia Corporal Jan Nowak, therefore quickly asked for support from the commanding officer of the defense, Captain Konrad Dwojak, to send reinforcements. The only thing he could do was to redirect one team from the northern platoon to his position.
This is where the greatest Polish advantage that was evident throughout the battle became apparent, the vehicles. Thanks to cars, the Poles could move a squad or an infantry section from a safe section to a threatened one with unimaginable speed for the Russians.
And so the quickly redeployed team supported the militia platoon, forcing the Russians to retreat deep into the swamps behind the stream.
Meanwhile, in the south, from the second auxiliary strike the Russian attack developed better, the Poles carried out in the strength of half a battalion (that is, two platoons) delaying actions on the previously prepared positions in Terespol retreating under the solid pressure of an entire infantry regiment and a battalion sent from the main strike from the Border Checkpoint west to the city.
Here the Poles retreated with great speed by means of their vehicles, having previously set fire to the GPK in order to prevent important information from falling into the hands of the Russians and to obscure the surroundings with smoke. The first of the two platoons pulled behind them two Russian Battalions, including one from the main line of attack thus helping the defenders in the middle battalion retreated to the line of buildings in the southern part of Terespol.
The second one, pulling the rest of the auxiliary attack behind him, withdrew to a position in Włóczki village and when the Russians began to approach too closely, hid in the woods just to the left of the lake. The fighting continued fiercely, although not without losses on the Polish side, but always at the great expense of the Russians. Both sides fired mercilessly at each other, but unlike the battles in the North, here the Russians were able to advance in a wider formation going through a field. And considering that it was not yet the season for earthworks, these fields were empty, overgrown in some places with meadow. But the most important thing was that both platoons could support each other with fire without the need to move, because from their resistance points the advancing Russians could be seen as if from both sides.
The most fierce and bloody fights took place where the Russian attack fell, i.e. along Ludowy Wojska Polskiego Street, which was the main artery of the city and at the same time led through Wspólna Street to the Brest Fortress.
It was here that most artillery fire fell, turning the eastern district of Terespol into rubble. Polish resistance was based on the Orthodox Church, the cemetery on the other side of the lagoon, the bridge, and a small forest on the north side of the bridge.
The team in Church defended themselves fiercely and courageously, despite the fact that they were on the wrong side of the flood plain as the rest of their Platoon. And all they could get from them was fire support.
Opposite them, two infantry regiments, 191 and 192, went into the attack, with 191 being the first and 192 kept in the perimeter until all regiments thrown into the attack began to report heavy losses. Then the 192nd was broken into battalions and two were sent to assist in the main attack, while one each was sent to the auxiliary.
Of course, Colonel Lev Zubov protested against breaking his unit into single battalions. General Laiming took note of this and ordered him to take command in place of Colonel Bogdan Pronin, a Polish sharpshooter killed by a bullet, commanding the 190th Regiment advancing in the southern strike.
His death broke up the local attack and caused panic among the Russians, who were held back solely by the will of their commander who, in order to encourage his soldiers, appeared among them to continue the advance despite the losses. This was the reason for his death when he visited the platoons occupying the village of Wloczki. Allowing the Polish captain to quickly send the platoon defending the south of the city to the center over the bridge.
The fighting then lasted almost four hours, a large part of the inhabitants had already been evacuated and an infantry company from Chelm, sent by train to help, was unloading at the station. There was no direct connection from Chelm to Terespol or at least to Biala Podlaska so the journey took some time. Fortunately, the MO(Citizen Militia) headquarters in Biala Podlaska sent a solid support allowing to relieve one and a half platoon about an hour and a half from the beginning of the Battle of Terespol.
Only the rapid redeployment of a perhaps tired but additional Platoon from the south allowed the temporary rejection in a sudden and unexpected local counterattack on the Russians who had already taken the church killing all the defenders beforehand.
Unfortunately, the Polish advance only served to drive the Russians from the vicinity of the church and adjacent May Street. As soon as they were forced out of these areas, the Poles immediately retreated behind the lagoon, while South Platoon quickly returned to their old positions as soon as the Russians in the south began to show signs of movement.
Fortunately, these were only signs of retreat from under the Poles' gun range. After seeing the losses, Lev Zubov decided to retreat, withdrawing from the village of Włóczki to the east. This was followed by the other colonels, the latest being in the north due to the difficult terrain for couriers and being pinned down along the tracks. The withdrawal from there succeeded only because of the fire cover of a fresh battalion from the 192nd Regiment. About 12:30 p.m. the first fighting of the day ended, and the area was shrouded in silence. The new infantry company allowed all the exhausted platoons to be relieved and the ammunition supply, which was depleting at a frightening rate, to be replenished.
But this was not the end of the Battle of Terespol.