Retired Navy Captain, Vietnam War hero, and political traitor, John McPain on recent Navy Seal raid in Yemen, from Military.com 
“While many of the objectives of the recent raid in Yemen were met, I would not describe any operation that results in the loss of American life as a success,”
By McPain’s standards, we might as well abolish our military
From History.net :
The battle [of Okinawa] had been among the most brutal of the Pacific War. The Navy suffered its greatest casualties for a single engagement. More than 12,000 Americans were killed and a further 50,000 were wounded. More than 150,000 Japanese â€” many of them civilians â€” were killed during the battle. Despite the casualties, preparations were quickly underway for the long-anticipated invasion of Japan. All hands turned to in order to begin preparations to invade Kyushu. Already, Army Air Forces bomber groups that had been in Europe on V-E Day joined Marine Tactical Air Force units operating from Okinawa’s airfields and thousands of American, British and Canadian carrier-based aircraft in the prelanding bombardment that was to lay waste to the southernmost Home Island before a contemplated October invasion was set in motion.
Not having access to a classified military briefing, I remain mute on the question if the Yemen raid was a success. However having passed high school history, I can state that no military victory worth winning comes without a price in blood. As, I am sure that any United Naval Academy graduate would have known.