WWI German Anti-Aircraft Gun. Rheinmetall 8,8-cm L/45 Flak. France, Summer 1918.

See the complete photograph at the post:
A German Büssing tractor towing a Rheinmetall AA gun (Flak) 8.8-cm L / 45. France 1918.
http://armoredcars-ww-one.blogspot.com.es/2016/03/a-german-bussing-tractor-towing.html

Ver la fotografía completa en el post:
Un tractor alemán Büssing remolcando un cañón antiaéreo Rheinmetall de 8,8-cm. L/45. Francia, 1918.
http://armoredcars-ww-one.blogspot.com.es/2016/03/a-german-bussing-tractor-towing.html