Wiki specs their range as 200 miles.
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The wiki article on ICBMs:
"The development of the world's first practical design for an ICBM, A9/10, intended for use in bombing New York and other American cities, was undertaken in Nazi Germany by the team of Wernher von Braun under Projekt Amerika.The ICBM A9/A10 rocket initially was intended to be guided by radio, but was changed to be a piloted craft after the failure of Operation Elster. Thesecond stage of the A9/A10 rocket was tested a few times in January and February 1945. The progenitor of the A9/A10 was the German V-2 rocket, also designed by von Braun and widely used at the end of World War II to bomb British and Belgian cities. All of these rockets used liquid propellants. Following the war, von Braun and other leading German scientists were relocatedto the United States to work directly for the U.S. Army through Operation Paperclip, developing the IRBMs, ICBMs, and launchers."
This A9/A10 was just some simple extension of the V2. Why would they use a weapon with 5500 km range against a target 300 km distant.
As for the alternative forms of air power:
"The United States Army Air Forces incurred 12% of the Army's 936,000 battle casualties in World War II. 88,119 airmen died in service. 52,173 were battle casualty deaths: 45,520 killed in action, 1,140 died of wounds, 3,603 were missing in action and declared dead, and 1,910 were nonhostile battle deaths. Of the United States military and naval services, only the Army Ground Forces suffered more battle deaths. 35,946 non-battle deaths included 25,844 in aircraft accidents, more than half of which occurred within the Continental United States.[76] 63,209 members of the USAAF were other battle casualties. 18,364 were wounded in action and required medical evacuation, and 41,057 became prisoners-of-war.[76][77] Its casualties were 5.1% of itsstrength, compared to 10% for the rest of the Army.[78][n 38]
Total aircraft losses by the AAF from December 1941 to August 1945 were 65,164, with 43,581 lost overseas and 21,583 within the Continental United States.[79] Combat losses of aircraft totaled 22,948 world wide, with 18,418 lost in theaters fighting Germany and 4,530 lost in combat in the Pacific.[80] The AAF credited its own forces with destroying a total of 40,259 aircraft of opposing nations by all means, 29,916 against Germany and its allies and 10,343 in the Pacific.[81]
The cost of the war to the AAF was approximately $50 billion,[n 39] or about 30% of the cost to the War Department,[78] with cash expenditures from direct appropriations between July 1942 and August 1945 amounting to $35,185,548,000."