Having gotten the chance to read a lot of late-WWI and early interwar doctrine pieces, one thing struck me in particular. Not the focus on trench lines or the different communications with no radios, but the presence of “1 pounder guns” like this.
The 1-pounder was described as being meant to hit targets like machine gun nests and armored vehicles. It was almost always intended to be used for direct fire. In other words, it filled the same niche that far less clunky recoilless and rocket launchers did in World War II and beyond. I found that interesting.
(And, of course, the widespread use of light AA guns for ground attack means even the original concept hasn’t gone away. That the pom-pom was also one of the first effective AAA pieces means the connection is even greater).