Land warfare
Land forces: Land forces include personnel, weapons platforms, vehicles, and support elements operating on land to accomplish assigned missions and tasks.

Infantry: Infantry are soldiers who fight primarily on foot with small arms in organized military units. However,  they may be transported to the battlefield by  ships, automobiles, skis, cargo planes, or other means.

Combat vehicles: Combat vehicles provide the means to mobilize heavy firepower to engage opposing forces including other combat vehicles. Combat vehicles are usually equipped to drive in rugged terrain. They are usually protected against other common threats with armor and other countermeasures.
Examples of combat vehicles include main battle tanks, infantry fighting vehicles, and self-propelled artillery.

Artillery: Historically, artillery (from French artillerie) refers to any engine used for the discharge of projectiles during the war. The term also describes ground-based troops, who primarily manned such weapons. The word is derived from the Old French verb attilier, meaning "to equip". 
This term includes coastal artillery which traditionally defended coastal areas against seaborne attack and controlled the passage of ships using their ability to deny access through the threat of coastal fire. It also includes land-based field artillery. With the advent of powered flight at the start of the 20th century, artillery also included ground-based anti-aircraft batteries.

Combined arms: Combined arms is an approach to warfare which seeks to integrate different arms of a military to achieve mutually complementary effects, such as, self-propelled artillery, mechanized infantry, aircraft and so forth.

By landscape and climate: Arctic warfare
Desert warfare
Jungle warfare
Mountain warfare
Urban warfare

Notes: 

Further reading: Christopher Tuck. Understanding Land Warfare. London–NY: Routledge, 2014.