Sturmgeschütz III
The Sturmgeschütz III ( "StuG III" ) assault gun was Germany's most-produced fully tracked armoured fighting vehicle during World War II , and second-most produced German armored combat vehicle of any type after the Sd . Kfz . 251 half-track . 
<triplet> Sturmgeschütz III <subj> World War II <obj> conflict <triplet> Germany's <subj> World War II <obj> participant in