[xoa]

Right, a key phrase here is "combined arms": nothing for capturing/holding at all on the modern battlefield combines speed, survivability, scale and effectiveness into a single package. It's all about each piece reinforcing the others, constantly making use of their own strengths and covering for the weaknesses of other pieces (and being covered in turn) and shifting to react to the opponents. Having all the various forces well trained together, with the autonomy to react fast to changing events at their own level, a good regular supply of information/theater oversight, and with a solid logistics chain behind them is vital. Without logistics, intel and trained, smooth combined arms effectiveness plummets no matter what else there is.