Explore olive-drab.com to understand its primary focus on U.S. military history and equipment. Find the primary classification (e.g., light, medium, heavy) and main armament of the M4 Sherman tank. Also, identify the primary purpose and key design features of the M-1943 Field Jacket. State the site's focus and the requested details.
Navigate to 'http://olive-drab.com/' Upon successful loading, identify the primary subject matter or focus of the website from the homepage or main navigation. Locate information about the M4 Sherman tank. Extract its primary classification (e.g., light, medium, heavy) and its main armament. Locate information about the M-1943 Field Jacket. Extract its primary purpose and key design features. State the primary focus of the website, the primary classification and main armament of the M4 Sherman tank, and the primary purpose and key design features of the M-1943 Field Jacket.
Successfully navigate to and load 'http://olive-drab.com/'. Clearly state the primary focus or subject matter of the website (e.g., 'U.S. Military History and Equipment'). Identify and state the primary classification (e.g., 'medium tank') of the M4 Sherman tank. Identify and state the main armament (e.g., '75mm gun') of the M4 Sherman tank. Identify and state the primary purpose (e.g., 'combat uniform', 'cold weather protection') of the M-1943 Field Jacket. Identify and state at least one key design feature (e.g., 'removable liner', 'four pockets') of the M-1943 Field Jacket. Synthesize all requested information into a concise answer.