looking for documentation on 156th inf reg, company L on Utah Baeach 6jun44

In tracing my Dad’s military movements I have currently come to a dead-end.

I need documentation of his movement from England to Normandy on June 6, 1944.

I am looking for information such as : who the 156th inf reg company L was attached to on 6Jun44 and what transport carried him to Utah Beach.

Any and all help is deeply appreciated.

Steve