While playing there he represented Southern Districts, Country NSW, New South Wales and also gained selection for the 1948 Kangaroo tour.

[5] After strong competition from other clubs, his friendship formed with Manly-Warringah front rower Roy Bull while the pair were playing for Australia against New Zealand in 1949 saw the Sea Eagles secure the 22-year-old Test hooker's services from the 1950 season.

[6] He was selected to represent Sydney against France during their 1951 tour of Australasia in a match that ended in a 19-all draw.

He captained Manly-Warringah in their maiden grand final appearance at the end of the 1951 NSWRFL season under coach Wally O'Connell.

On 22 January 2007 Schubert died at Mona Vale Hospital from pneumonia which he contracted whilst in for his hip.