The term "Wehrmacht" is a direct compound from modern German, formed from the nouns "Wehr" (defense) and "Macht" (power, force). It literally translates to "defense force" or "armed power." This specific designation was adopted in 1935 to replace the earlier term "Reichswehr," serving as the official unified name for Nazi Germany's military, encompassing the army (Heer), navy (Kriegsmarine), and air force (Luftwaffe). While its constituent roots are ancient, the compound itself is a 20th-century political and military coinage, whose historical meaning is now inextricably linked to the period of the Third Reich.

Structure: wehr (defense) + macht (force) - wehr: From German, meaning "defense" or "resistance." Its ultimate origin is Proto-Germanic warjaną, meaning "to ward off, defend." - macht: From German, meaning "force," "power," or "might." Its ultimate origin is Proto-Germanic mahtiz, from the Proto-Indo-European root magh-, meaning "to be able, have power."