Answer
Steel, steel and more steel. However the main decks were wood-covered.
Carriers, Battleships, Cruisers, Destroyers, and Subs
teak wood
No US battleships were sunk during the Viet Nam war.
At the end of World War II in September 1945, the United States had 23 battleships in active service. This included both modern battleships and those that had been refitted or repaired during the war. Many of these ships were later decommissioned or retired in the following years as naval warfare evolved.
yes
No, not as ground forces, although they did serve in France during World War 1. US Navy battleships and cruisers in the European Theater during World War 2 would have typically carried a small number of US Marines.
I'm sure you mean "attacked", and I think you mean "warships", not battleships. I'm also sure the answer is "none", if you mean during the period leading up to the entry of the US in WWI.
USS Arizona, USS Utah, and USS Oklahoma are still on the bottom. However, the battleships USS Pennsylvania, USS New York, USS Nevada, and USS Arkansas are also on the bottom...sunk as targets after the war.
US battleships, with the one exception of the USS Kearsarge, were named after US states. US cruisers were named after US cities; US destroyers were named after US Sailors or Marines; US submarines were named after fish. US fleet & light carriers were named after Revolutionary War battles or ships. US escort carriers, also known as jeep carriers were named after US bays.
The USA joined in the war because the USA was part of the Triple alliance in the first place, and after Germany attacked the USA's submarines and battleships, they then joined the war in 1917.
Well, specifically produced for WW2 was the Bismark and Terpitz. There were also several others from earlier years such as Scharnhorst and Gneisenau which were also used in WW2. All were sunk or scuttled.
Emmanuel J. Lobato, who commandered the San Juan. battleships, destroyers, and carriers.