Gall enlisted in the Women's Auxiliary Air Force (WAAF) and was sent to work on radar operations in Northern Queensland.
[1] In 1944, at the age of 21 she returned to Sydney and was allowed under the Commonwealth Reconstruction Training Scheme to start university study in Science.
[2] After a short period in the Australian subsidiary of BIS, she secured a research role investigating coal at the CSIRO.
[1] There was opposition to her appointment based on her gender, but this was soon overcome as she established good relationships with both students and colleagues.
[2][9] She became Head of School with unanimous support immediately after a change of rules allowed Associate Professors to take up the role.