1.A military campaign denotes the time during which a given military force conducts combat operations in a given area (often referred to as AO, area of operation). A military campaign may be executed by either a single Armed Service, or as a combined services campaign conducted by land, naval, air, cyber and space forces.
Facts. 1  Tall marigolds are sometimes labeled African marigolds, and the dwarf kinds are often called French marigolds. 2  Tall marigolds (Tagetes erecta) grow anywhere from 15 inches to 4 feet tall with blooms that can reach up to 5 inches across.
1 Tagetes erecta are the tallest, at three to five feet. They are sometimes known as African, or American, marigolds.  Bushy T. patula, or French marigolds, are somewhat smaller and more compact. Elegant and eye-catching, they have relatively demure flowers and usually grow from 6 inches to 2 feet tall.