 On 15/16 April 56th Division renewed their attack on the Fossa Marina but failed again.However, the cumulative effect of heavy air attacks since 13 April took their toll and on the night of 16 April the 24th Guards Brigade were able to cross the canal with relatively little trouble although their advance was once again halted by resistance about north of the canal.On the west side of the Argenta gap 11th Brigade was able to get across the Fossa Marina east of Argenta.