ww1inpictures:German troops stand by to inflate an observation balloon, 1914
ww1inpictures:German troops stand by to inflate an observation balloon, 1914 -- source link
Tumblr Blog : ww1inpictures.tumblr.com
ww1inpictures:German troops stand by to inflate an observation balloon, 1914 -- source link
Tumblr Blog : ww1inpictures.tumblr.com