My first thought was French. And a search of the web found a reference that said the early French Tank crews wore a badge that meets that description. However, I can not find a photo of this. I don't know if it was a badge(pin) worn on their uniform or part of their helmet. Most French helmets have a raised image for the type of unit---usually a flaming grenade. This was attached to the front of the Adrain helmet. So, this is not exactly a pin or badge.
Reference: "Army Uniforms of World War 1" by Andrew Mollo & Pierre Turner, Arco Pub, 1978.
Above book illustrates the uniform of a French tank crew member and has this text:
"The tank commander wears the Adrian helmet with aritllery badge.... In August 1918, a special sleeve badge consisting of crossed cannons surmounted by a knight's helmetwas introduced for crews of tanks."
Also recall, that the badge for the Engineers was a breast plate with an helmet resting on it that resembled what was worn during the Napoleonic wars.
Branch symbol of the Artillery.
This pin is worn on US Army uniforms to indicate that the wearer is a member of the US Army Field Artillery.
CAL on a World War 1 military pin with crossed rifles most likely refers to California. It could be a symbol indicating the unit or organization that the individual belonged to, possibly a California-based infantry unit. Further research into specific units or markings may provide more information about the pin's significance and the individual's service.
The artillery cap badge with a wreath, crossed cannons, and German crown was typically used by the German military during World War I. The design varied slightly between different branches of the German artillery, but generally, it featured a wreath surrounding crossed cannons with a crown on top.
ten cannons: six 9 in. ones, two 6.5 in. and two 4 in.
the 3 stands for the 3 rd infantry [crossed rifles] H was the division, hence the 3 rd infantry division,
why did Smith fire off the two cannons he gave Rawhunt as a present for Powhatan
two
if these two will ever fight in halo i would say the hawk because it has rockets, cannons and Gauss cannons
2 feathers crossed
Current in a standard house is AC (alternate) so it doesnt matter if the live and neutral are crossed. Should the earth and live be crossed then the earth leakage would trip
two parallel lines are crossed by another line ,that's the perpendicular.
it is really easy it crossed the ms. river& the