Bulgarian Military Red Cross in Siedlce, Poland 1943

What do we know about participation of the Bulgarian army with the Nazi Germany particularly during in the "East Front" - that is war against Soviet Union? Officially Bulgaria was neutral until 1 March 1941, participating on a sideways in the war against Greece and Yugoslavia. As a part of Axis Bulgaria occupied parts of Serbia and Greece.

Bulgaria did not send her army to USSR but apparently assisted sidelines as in the previous invasion to Germans. We can learn about that from the fact that the Bulgarian Army managed to make tours in Poland 1943 here is photo evidence from the Internet.

Bulgarian sanitary mission (train) to the Eastern Front: medics are heavily armed in the areas of active work of Soviet partisans city Siedlce, near Brest, Eastern Poland, 1943.

Bulgarian sanitary mission (train) to the Eastern Front: Stage hospital BRC Legionovo, Poland - one of the places where the train brings the wounded from the front. The building is a former railway School of the Polish Army. 

It creates the Bulgarian Red Cross military hospital equipment, medical and nursing staff from Bulgaria.

Bulgarian sanitary mission (train) to the Eastern Front: direct blood transfusion from healthy to severely wounded soldier made by Bulgarian nurses in the Red Cross hospital in Legionovo, Poland

More details about Bulgarian Train to the East Front you can read in the separate blog. See http://mysteriesofwwii.blogspot.co.il/