Also at the event was Brigadier Sara Sharkey. She said much has changed for mothers serving since she first joined over 20 years ago:
"For me, I've been in the Army for 28 years and it's changed in two significant ways.
"Policy's changed on the things you can and can't do, so for me when I joined I had to leave if I got pregnant."
Brig Sharkey said the attitudes to men and women have changed in the Army:
"The policies on maternity leave and paternity leave and flexible working, that's changed enormously over those 28 years.
"The culture changed as well - so what I find now is that most of my male colleagues also want to spend time with their families and it's not just something that mums want to do but dads want to do as well.
"It's becoming more acceptable for all to behave in a much more family balanced way of work," Brig Sharkey added.
Kerrine Bryan is the author of 'My Mummy Is A Soldier'. She served as an engineer and says she wrote the book in the hope it will educate and inspire the next generation.
Ms Bryan said the feedback she's had from the book has been "great":
"There's not much out there at the moment that tells the story of women in male-dominated fields."
She says as a woman who was an engineer, it was one of her main reasons for starting the book and to get the message out there.
Ms Bryan crowdfunded the book to produce 400 copies but she is hoping to provide the books to the 17,000 primary schools across the UK.