Late in 3.5, the Marshal was released, and for the most part it was lame (except for a few dips in some CharOp builds).
In 4e, the idea was updated and the "Warlord" was born. One of my players created one, and really enjoyed it as a very different type of character (work via others, as much as yourself), compared to the years of 3.x characters we were all used to (individualists). But when that PC died, he moved on to a new character type for the bulk of that campaign.
In our years of playing (started in the alpha and beta-test group), no-one has complained that 5e is missing something similar to either of these concepts - a Fighter (and probably some other classes / multiclass options) can get close to the "feel" of either, i.e. team-work, but to be honest building a whole class around that idea seems unnecessary to me - the core classes of Fighter, Cleric, Wizard and Rogue are the foundation, and even other classes like Barbarian, Ranger, Sorcerer etc are, IMO, not really all the different to be genuinely strong "core classes", so IMO we certainly don't need even more classes in the game.
In 4e, the idea was updated and the "Warlord" was born. One of my players created one, and really enjoyed it as a very different type of character (work via others, as much as yourself), compared to the years of 3.x characters we were all used to (individualists). But when that PC died, he moved on to a new character type for the bulk of that campaign.
In our years of playing (started in the alpha and beta-test group), no-one has complained that 5e is missing something similar to either of these concepts - a Fighter (and probably some other classes / multiclass options) can get close to the "feel" of either, i.e. team-work, but to be honest building a whole class around that idea seems unnecessary to me - the core classes of Fighter, Cleric, Wizard and Rogue are the foundation, and even other classes like Barbarian, Ranger, Sorcerer etc are, IMO, not really all the different to be genuinely strong "core classes", so IMO we certainly don't need even more classes in the game.