何だろう。セルビアのロシア人部隊...とは?
これかな?
”Russian Protective Corps”
https://en.wikipedia.org/wiki/Russian_Protective_Corps
うーん....
” The number includes all troops fighting under German command, including Germans, Azerbaijanis, Hungarians, Russians, Ukrainians, Cossacks, etc. For detailed discussion of various figures see the text in this section”
数学、歴史(主に戦史)、ペンギン、川の本を集めています。