WW2 weapons alive and well in Syria

Hello warriors,

here's something interesting. You probably heard of the major Sturmgewehr 44 cache found in Syria and used by the terrorists. Here's another relic from terrorist use: the 105mm German LeFH 18 howitzer that was used before and during WW2 by nazi Germany, as published by Washington Post:



I really wonder where do they get the ammunition for that...