Current local time in Helena, lewis_and_clark County, Montana, Mountain Time Zone - daylight saving time change dates 2018 Local Time in Helena, MT 7:45:08 AM, Monday 15, January 2018 MST AM/PM 24 hours
2. trench warfare-a type of armed combat in which the opposing troops fight from trenches that face each other; instead of the war ending quickly, it became bogged down in trench warfare. armed combat, combat-an engagement fought between two military forces. Translations.
Amphibious warfare is a type of offensive military operation that uses naval ships to project ground and air power onto a hostile or potentially hostile shore at a designated landing beach. Through history the operations were conducted using ship's boats as the primary method of delivering troops to shore.