What would happen if mechs were used in warfare today?
If they were used today? They wouldn't work very well and they would be impractical. The technology for very large, bidpedal, mechanical, armoured robots (a.k.a mechs) is not quite up to speed with the technology we see in cartoons, movies, and animes.
Here are a few of the possible reasons why mechs are impractical for combat.
1.) If a human to man the ****pit you are putting lives in danger. Unmanned drones and other such technology already exist that keep soldiers off and safe from the battlefield. (Although the mech could be remotely operated).
2.) Giant mechs would require large amount of resources to build.
3.) Giant mech would be an easy target to spot and hit by the enemy. Mechs are probably hard to make stealth to radar as well.
4.) Transporting mechs to the battlefield would consume large quantities of fuel and probably would take longer to transport than tanks.
5.) It doesn't require a large armoured mech to deliver a powerful payload. Anti-tank guns (think RPGs) can stop tanks and be held and fired by infantry. Airplanes, drones, sub-marines, and other such military vehicles are all smaller, and most likely faster than a mech and can all launch highly destructive missiles, which would probably be the same type of missiles a mech would use.
Gigantic mechs are all around impractical for warfare. However, smaller human sized mechs could play a role in adding infantry units someday. But I feel the closest we will see to mechs in combat will be exoskeletons, which already being developed to help aid infantry in carrying heavier loads more easily.
Let me explain of the mech im talking about: tall as the eiffel tower, impenetratable armor (unless if u use ICBMs), Can fire nukes from it's shoulders, a gun from the left hand and a sword on the right hand.
But I feel the closest we will see to mechs in combat will be exoskeletons, which already being developed to help aid infantry in carrying heavier loads more easily.
I'm sorry to offend you but u are talking (in this sentence that i copied and quote) about a freakin' power suit!
A giant mech would definitely be cool, but a small missile can pack a huge punch, meaning a mech would be an easy target. Would I like to see a real life mech? Sure why not? Will they ever be used in the military, probably not.