Fieseler Fi 103. V1

A navalized version, designated KGW-1, was planned to be used against Japan from LSTs ([Vous devez être inscrit et connecté pour voir ce lien]) as well as [Vous devez être inscrit et connecté pour voir ce lien] (CVEs).

In addition, launches from [Vous devez être inscrit et connecté pour voir ce lien] were foreseen and techniques developed.

The official U.S. Air Force Fact Sheet on the JB-2 states just before the end of the war, an aircraft carrier en route to the Pacific took on a load of JB-2s for possible use in the planned invasion of the Japanese home islands, however the name of the carrier has never been identified.

In addition, according to one Eglin AFB history, an unidentified USAAF unit in the [Vous devez être inscrit et connecté pour voir ce lien] was preparing to launch JB-2s against Japan.

The war's end led to the cancellation of Operation Downfall and the production of JB-2s were terminated on 15 September. A total of 1,391 units were manufactured.

Postwar testing


The U.S. Army Air Force continued development of the JB-2 as Project MX-544, with two versions: one with preset internal guidance and another with radar control.

Several launch platforms were developed, including permanent and portable ramps, and mobile launching from beneath the wings of [Vous devez être inscrit et connecté pour voir ce lien] or [Vous devez être inscrit et connecté pour voir ce lien] bombers, much as the [Vous devez être inscrit et connecté pour voir ce lien]H-22 had actually done late in the war for the Luftwaffe. Testing continued from 1944 to 1947 at Eglin to improve launch and guidance.

The U.S. Navy's version, the KGW-1, later redesignated LTV-N-2, was developed to be carried on the aft deck of submarines in watertight containers.

The first submarine to employ them was the [Vous devez être inscrit et connecté pour voir ce lien] which successfully launched its first Loon on February 12, 1947, off [Vous devez être inscrit et connecté pour voir ce lien], [Vous devez être inscrit et connecté pour voir ce lien].

After the [Vous devez être inscrit et connecté pour voir ce lien] became a fully independent arm of the National Military Establishment 18 September 1947, research continued with the development of unmanned aircraft and pilotless bombers, including the already available JB-2.

The [Vous devez être inscrit et connecté pour voir ce lien]
used JB-2s in a series of tests in the late 1940s and 1950s. In the
spring of 1949, the 3200th Proof Test Group tested launching JB-2s from
the under the wings of [Vous devez être inscrit et connecté pour voir ce lien] bombers at Eglin AFB.^{[Vous devez être inscrit et connecté pour voir ce lien]} About a year later, JB-2s were tested as aerial targets for experimental infrared gunsights.^{[Vous devez être inscrit et connecté pour voir ce lien]}

In the summer of 1992, military crews uncovered the well-preserved
wreckage of a JB-2 at a site on an Air Force-owned section of [Vous devez être inscrit et connecté pour voir ce lien]. Most crash sites on the [Vous devez être inscrit et connecté pour voir ce lien] were little more than flaky rust, but after the find, officials were planning further searches.^{[Vous devez être inscrit et connecté pour voir ce lien]}