ElloinmorninJ
Where'd That 6th Toe Come From?

Their machetes and spears would be useless against any NCR soldier with a rifle. It's not like they have good armor, so how are the Legionnaires not just constantly getting mowed down?
In game you mostly encounter recruits and similarly under equipped fellas early on. Lorewise, Caesar is saving most of his men for the Dam itself. In game, it's pretty obvious their equipment isn't exactly balanced well. The ambush on the way to Novac where the legionaries virtually always die to the caravans passing is telling as they are actually supposed to win that ambush. Guess stats weren't properly balanced in time.Their machetes and spears would be useless against any NCR soldier with a rifle. It's not like they have good armor, so how are the Legionnaires not just constantly getting mowed down?
Were you military or police?They do use guns, they just don't use ONLY guns.
Guns are not magical and they don't always drop people with one bullet unless its a killshot - especially with a stronger caliber. Police and military manuals tell that in a Ranged vs Melee combatant fight, if the distance between them is seven meters OR less, the Ranged Combatant is in deep danger. The shooter only has a few moments to drop the target before the target engages in CQC. Seven meters in real-life gunfights is point-blank range AKA congratulations you fucked up. There are a few "police vs crazy druggies with knife" videos where this kind of situation happens, ask any cop, they HATE when this shit happens.
Considering the Legion is pretty much an army of press-ganged, brainwashed tribals, often doing campaigns in very remote locations, it makes a lot of sense that they would be very big in melee combat. Machete doesn't jam, or run out of bullets.
Compare NCR/Legion average soldier CQC training:
NCR Trooper: Pointy end of the knife goes towards the enemy.
Legionnarie: Actual experience and training with melee and unarmed combat.
If those two run out of bullets during a campaign, NCR Trooper is good as dead. Legionnarie won't even skip a beat, just draw the machete and keep killing.
Don't forget: Legion doctrine is all about assaulting and storming enemy positions with shock attacks and asymmetrical warfare. They're not good at securing locations, they're good at taking them.
Its why Harlon noped the fuck out of the Dam and engaged the Legion in open ground using a fighting retreat covered by snipers until they lured the Legion into Boulder City. Fighting the Legion in a dam full of tight spaces is the kind of fight the Legion likes. Lee Oliver, on the other hand, wants a stand-up fight with the Legion on the Dam, and bets on the Heavy Troopers to carry the day with heavy armor and firepower.
Pity bayonets didn't make the cut, NCR Troopers doing bayonet charges once they ran out of ammo would be awesome (also it fits their "Californian Tommies" theme). I suspect the Legion would love bayonets, too.