Relic Entertainment has added a long array of military units in the Age of Empires IV. While some military units like the Battering Ram and Siege Tower are common to everyone, Others are exclusive to their respective civilization.

So, here is a list of all the military units in Age of Empires IV. 

English Civilization

Barracks

  • Hardened SpearmanVeteran SpearmanElite SpearmanVanguard Man-at-ArmsEarly Man-at-ArmsMan-at-ArmsElite Man-at-Arms

Docks

  • GalleyHulkDemolition ShipCarrack

Archery Range

  • Longbowman — Exclusive to English Civilization —Veteran Longbowman — Exclusive to English Civilization —Elite Longbowman — Exclusive to English Civilization —CrossbowmanElite CrossbowmanHandcanoneer

Stable

  • ScoutHorsemanVeteran HorsemanElite HorsemanKnightElite Knight

Siege Workshop

  • SpringaldMangonelCounterweight TrebuchetBombardRibauldequin

Others

  • Battering RamSiege Tower

Chinese Civilization

  • SpearmanHardened SpearmanVeteran SpearmanElite SpearmanPalace GuardElite Palace Guard

  • JunkWar JunkExplosive JunkBaochuan

  • ArcherVeteran ArcherElite ArcherZhuge Nu — Exclusive to Chinese Civilization —Veteran Zhuge Nu — Exclusive to Chinese Civilization —Elite Zhuge Nu — Exclusive to Chinese Civilization —CrossbowmanElite CrossbowmanHandcanoneerGrenadier — Exclusive to Chinese Civilization —

  • ScoutHorsemanVeteran HorsemanElite HorsemanLancerFire Lancer — Exclusive to Chinese Civilization —Elite Fire Lancer — Exclusive to Chinese Civilization —

  • SpringaldNest of Bees — Exclusive to Chinese Civilization —Counterweight TrebuchetBombard

French Civilization

  • SpearmanHardened SpearmanVeteran SpearmanElite SpearmanMen-at-ArmsElite Men-at-Arms

  • HulkGalleassDemolition ShipCarrack

  • ArcherVeteran ArcherElite Archer Arbalétrier — Exclusive to French Civilization —Elite Arbalétrier — Exclusive to French Civilization —Handcanoneer

  • ScoutHorsemanVeteran HorsemanElite HorsemanRoyal KnightVeteran Royal KnightElite Royal Knight

  • SpringaldMangonelCounterweight TrebuchetCannonRibauldequin

Holy Roman Civilization

  • SpearmanHardened SpearmanVeteran SpearmanElite SpearmanEarly Man-at-ArmsMan-at-ArmsElite Man-at-ArmsLandsknecht — Exclusive to Holy Roman Civilization —Elite Landsknecht — Exclusive to Holy Roman Civilization —

  • ArcherVeteran ArcherElite ArcherCrossbowmanElite CrossbowmanHandcanoneer

  • SpringaldMangonelCounterweight TrebuchetBombardCulverin

Mongol Civilization

  • SpearmanHardened SpearmanVeteran SpearmanElite SpearmanMan-at-ArmsElite Man-at-Arms

  • Light JunkWar JunkExplosive JunkBaochuan

  • ArcherVeteran ArcherElite ArcherCrossbowmanElite CrossbowmanHandcanoneerMangudai — Exclusive to Mongol Civilization —Veteran Mangudai — Exclusive to Mongol Civilization —Elite Mangudai — Exclusive to Mongol Civilization —

  • ScoutEarly HorsemanHorsemanVeteran HorsemanElite HorsemanLancerElite Lancer

  • SpringaldMagonelTraction TrebuchetBombard

Rus Civilization

  • Lodya Attack Ship — Exclusive to Rus Civilization —Lodya Demolition Ship — Exclusive to Rus Civilization —

  • ArcherVeteran ArcherElite ArcherCrossbowmanElite CrossbowmanStreltsy — Exclusive to Rus Civilization —Horse ArcherElite Horse Archer

  • ScoutHorsemanVeteran HorsemanElite HorsemanEarly KnightKnightElite Knight

  • SpringaldMagonelCounterweight TrebuchetBombard

Delhi Sultanate Civilization

  • DhowBaghlahExplosive DhowXebec

  • ArcherVeteran ArcherElite ArcherCrossbowmanElite CrossbowmanHandcannoneerTower War Elephant — Exclusive to Delhi Sultanate Civilization —

  • ScoutHorsemanVeteran HorsemanElite HorsemanLancerElite LancerWar Elephant — Exclusive to Delhi Sultanate Civilization —

Abbasid Dynasty 

  • ArcherVeteran ArcherElite ArcherCrossbowmanElite CrossbowmanHandcannoneerCamel Archer — Exclusive to Abbasid Dynasty —Veteran Camel Archer — Exclusive to Abbasid Dynasty —Elite Camel Archer — Exclusive to Abbasid Dynasty —

  • ScoutHorsemanVeteran HorsemanElite HorsemanLancerElite LancerCamel RiderElite Camel Rider

  • SpringaldMagonelCounterweight TrebuchetBombardCulverin

Remember, Civilizations like the Delhi-Sultanate, Chinese, Abbasid Dynasty, and the Holy Roman Empire can only be played through multiplayer mode. There is no single-player campaign corresponding to these civilizations.

For more awesome guides, check out the Age of Empires IV section on Pro Game Guides.