Photos of the Czech legion’s trans-Siberian trek during the Russian Revolution
http://www.drfaltin.org/archive.htm

Map showing the dismemberment of Czechoslovakia in 1938, 1939:
http://www.humboldt.edu/~rescuers/book/Chlup/chlupgif/czechmap2.html

Operation Barbarossa
http://www.militaryhistoryonline.com/wwii/stalingrad/barbarossa.aspx

Berlin Blockade
http://www.pbs.org/wgbh/amex/bomb/peopleevents/pandeAMEX49.html

East German Uprising
http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB50/

Factbook – Czech Republic
https://www.cia.gov/cia/publications/factbook/geos/ez.html

Information on weapons that are featured in Gauntlet:
The Masin group’s initial arsenal:
MG-34., http://world.guns.ru/machine/mg32-e.htm
MG-38/40 “Schmiesser” http://world.guns.ru/smg/smg33-e.htm
MG-42 http://world.guns.ru/machine/mg33-e.htm
P-38 (carried by Pepa at Kovolis, and later by Radek in East Germany): http://world.guns.ru/handguns/hg68-e.htm

Celakovice submachine guns:
Sa 23 http://world.guns.ru/smg/smg46-e.htm

Milan’s lost STAR pistol (obtained in Celakovice raid):
http://world.guns.ru/handguns/hg79-e.htm

Vasek’s CZ 7.65 (obtained in Celakovice raid, used by Vasek at Kovolis and in East Germany) http://world.guns.ru/handguns/hg193-e.htm

Walther PPK (obtained from Koci by Pepa at Kovolis, and carried by Pepa in East Germany):
http://world.guns.ru/handguns/hg13-e.htm

VOPO equipment:
STG-44 http://world.guns.ru/assault/as51-e.htm

Officer’s sidearm (carried by Grumini)
Parabellum 08 http://world.guns.ru/handguns/hg67-e.htm