Their dialogue mostly features them toadying up to you, and when they're being shot at, their response is to ask if they can be temporarily excused. In keeping with the imperialistic nature of Japan in the game, fluff describes them as being looked down upon for being just regular workaholics rather than battle-ready combat workaholics.

Salaryman: The Imperial Engineers from Red Alert 3 are this personified, wearing office suits, glasses, and headphones with built-in mics, including refrences to quirky office fitness programs for wage-slaves (it's the given excuse for the Japanese engineer's ability to sprint).

It's not very strong, but it can help against other engineers.

Revolvers Are Just Better: The Soviet Combat Engineer in RA3 is armed with one.

Not Even Bothering with the Accent: In Red Alert 1 the Engineers will always speak with a gruff, English voice even if you're playing as the Soviets.

The Medic: In Red Alert 3, the Allied Engineer can deploy a first aid tent to heal infantry.

Leaning on the Fourth Wall: One of the 'affirmative' lines spoken by Yuri's Engineers is 'Needs a paint job', noting how buildings change colour when captured.

The Engineer: Engineers can defuse bombs, repair bridges and your buildings, capture enemy buildings, or repair vehicles when put inside an IFV.

Being the only human, non-Commando infantry unit that can swim in that game, they are the only infantry that can capture depiloted ships.

Like all infantry units, Engineers can capture depiloted vehicles in Red Alert 3.

Standard for Command & Conquer games, Engineers can capture enemy buildings and partially or fully make use of the enemy arsenal.

Deployable Cover: The Soviet engineer in Red Alert 3 can build Battle Bunkers with room for five soldiers.

Bomb Disposal: In Red Alert 2, engineers can defuse bombs planted by Crazy Ivans.

Just watch them do their little power strut.

Asian and Nerdy: Imperial Engineers in Red Alert 3.

All Your Base Are Belong to Us: An engineer raid in any of the games can easily see half your enemy's base fall to you in one fell swoop.

Ah-firmative.Although (usually) unarmed, the engineer is a important asset on the battlefield since they can capture enemy and tech structures or instantly repair your own.

Command and conquer engineer