 On 13 March 1938, Ihlefeld was credited with his second victory, a Polikarpov I-15 biplane fighter aircraft followed by his third, a I-16, on 11 May 1938.A week later, on 18 May, he claimed another I-16, the victory was unconfirmed.A Tupolev SB-2 bomber from a force attacking La Sénia, shot down on 2 June 1938, became his fifth victim.