And by the time they are buying there things and starting to deploy in 5 to 8 years , the emerging battle field will be dominated by Ariel and ground drones, making any front lines no go zones to human. Pay attention to people like Luckey Palmer - the interception of AI, robotics enabled by Tech from EV ( batteries, actuators ) and mass collaboration of data in real time. IMHO, human against human fighting like what we know of today is on the last leg and the future will be vastly different . I cannot speculate what small arms will be like in an era where human are scarce and valuable targets, and the threats are mostly drones and robotic weapon stations.
There may not be human infanteers and armours the way we know of today. Using human to clear trenches and buildings are costly and inefficient. At the minimum human soldiers should be watching from afar and let ground and Ariel drone clear out other humans solders of less advanced adversaries or those who refuse to use robots and AI, and China is not the one who is hesitant to deploy mass number of AI enabled robots. Countries like Canada who emphasize on using the defence industries and the militaries to employ people rather than creating capabilities will be the most at risk in the future robotic reality.