Why do WE always brag about what "WE" can do in a war, when we aren't even there?

Question

All I see regarding answers to questions about our involvement in wars and conflict are haughty declarations from fellow Americans --such as "we can do it" "Nuke em nuke 'em" "Blanket 'em" "We're the baddest" The latest was: "our military can take on Iran and N Korea" ....and its all kind of pathetic really...that we need to act like a bunch of big bullies, like on a playground somewhere, when US troops are dying on undefined battlefields everyday in Iraq and Afghanistan.
While we sit here all hyped up talking about how "WE" can do this and how "WE" can do that, when WE are nothing but us....just sitting here writing questions and getting answers and practically salivating when we get a few points.
Its rather easy to talk about what "WE" can do, especially when WEare nowhere near the battlefields or war zones..... So "WE" is a rather presumptious definition..and since it is, maybe we can refer to
WE" as "Our US troops"
and not ourselves.
Because WE're not doing sh+++

Answer 1

It is 'we' as opposed to 'them'....It just defines a group of common interest. I find it annoying sometimes, especially when some talk about sport as if they were actually part of the team.

Answer 2

Same reason that people say WE won a match when they couldn't even kick a ball if their life depended on it.

Answer 3

Because it shows ownership. Even if WE aren't there specifically, representatives of our country are there, so when we say we, it more all encompassing.