Finnish prisoners of wars marching into captivity. They where captured during Soviets Vyborg–Petrozavodsk Offensive June 10 – August 9, 1944.

During Continuation war Soviets got around 3400 Finnish POW and about 1 388 of them died on the camps. Rate of deaths is  probably higher cause Soviets did not  count those ones who died during they march to the camps. 

Long and hard journey ahead

Portrait of a wounded Soviet Army soldier following the Battle of Vuosalmi on the Karelian Isthmus during the Finnish-Soviet Continuation War. The battle ended with a decisive Finnish victory. Early July 1944.

Portrait of a wounded Soviet Army soldier 

Railway locomotive and train destroyed by French or Belgian Resistance, 1944.  

This may have started as a simple derailment.  However, steam engines are, always,  potentially dangerous machines; driving one safely was a skill.  In particular, drivers had to be able to control the pressure in the boiler system, keeping it high enough to produce drive, but lower than the pressure tolerance allowed for the engine.  Normally, if pressure rose too high, a lead plug in the boiler acting as a crude safety valve would melt and blow out, releasing the pressure (a dismissal offence for drivers on most railways, btw).  However, the lead plug mechanism was not infallible and, if the driver was prevented, say, by injury or death, the boiler could overheat out of control, causing a catastrophic boiler explosion, as here.  

The "flared" effect at the front of the engine is caused by the bursting and spreading of the internal piping that distributes the heating water within the boiler - a bit like central heating radiators, in a way.  Best regards, JR.