In the town of Lomazy (Lomza) in eastern Poland, the Reserve Police Battalion 101 from Hamburg, led by Major Wilhelm Trapp, started the round up of all Jewish inhabitants. About 1,650 persons were arrested and marched to the playing field of the local school. Made to squat under a scorching sun and without anything to drink many fainted from the heat. A group of men were then selected and taken to a wooded area to dig a trench 30 yards wide and 50 yards long.
While the trench was being dug, back in the playing fields the men of Battalion 101 were having a bit of ‘fun’. An empty bottle was thrown into the crowd of squatting victims and whoever was hit was then dragged out in front of the crowd and shot. When the digging was finished, the executions began. After shedding their clothes the naked victims were forced to run a gauntlet of policemen wielding clubs and rifle butts before reaching the trench, bloodied and half dead.
As the pit began to fill with water the victims were made to lie down in the water before receiving a bullet in the back of the head. The next victims had to lie on top of the corpses while their killers stood knee-deep in the bloodied water and fired the fatal shots. As the murderers (including many Ukrainian collaborators - Hiwis) got more and more drunk they were then relieved by another squad.
Finally, when most of the 1,650 Jews were executed the remainder were spared to fill in the trench after which they too were shot. The town of Lomazy was now declared ‘Jew-free’. Major Trapp survived the war but in July, 1948, he was arrested and extradited to Poland for trial. He was condemned to death and the sentence carried out at Siedlce on the 18th of December, 1948.