Rubuta ci gaba ga wannan sakin layi - Tsoron mamayewa bai daɗe ba. Asirin Birtaniya ya gano motsi na rundunar jiragen ruwa na Japan zuwa gabas a tsakiyar watan Afrilu, da kuma tura su a cikin Pacific a tsakiyar watan Mayu. Bayan Yaƙin Midway
a watan Yuni, an fahimci cewa babu wata barazana ga manyan ayyukan jiragen ruwa na Japan a cikin Tekun Indiya. A watan Satumba, jami'an leken asirin Burtaniya sun yi hasashen cewa Japan za ta koma kan kare kanta. A sakamakon haka, ba a ƙarfafa Gabas ta Gabas ba kamar yadda aka tsara kuma, a maimakon haka, ya ragu bayan farkon Yuli.