Sappers (traditionally)
Berserkers
Several forms of the latter have arisen throughout almost all cultures- Over stimulate a man to the point of blinding rage, hand him a weapon and point him to the enemy. Carelessness alone usually resulted in fatal blows being reigned upon them, but due to adreneline, drugs, or just pure will, a few would result in much heavier casualties on the enemy.
Any war involves a level of “employing suicide tactics”
But it’s been much dimished what with “risk assesment training” and the value in dollars of the training of the individuals involved.
Of course, this was also still the result of an actual nation defending it’s land.
As the saying goes “All’s fair in Love and War.”
Just kill him before he kills you as a soldier, or make them bare more death than you as a commander.
Any military organization in a major war will sometimes ask men to make a suicide mission.
However, look at the absolute moral depravity of the commanders on the Western Front in WWI. Asking men to die by the hundreds of thousands for a hundred yards.
Look at the Japanese. Asking their men to die instead of being taken prisoner, for no military purpose.
And look at the American military experience - where the goal is to bring the men home if at all possible.
No comparison to the morality of command at the end of the day. None. A moral military does not condone suicide as a daily strategy.