Royal Military Academy Sandhurst welcomed youngsters at the STEM careers fair.
The Princess Royal also attended the event and she got a tour of the stands the students have been viewing over the past two days.
The focus of the event was on STEM subjects: Science, Technology, Engineering, and Maths.
Evelyn, aged 9, got to demonstrate how lemons can power a calculator to the Princess Royal.
The event has doubled in size since 2018.
It is now spread over two days, with 52 companies showcasing STEM careers to 2,000 visitors.
Brigadier Sara Sharkey is the Army advocate for women in STEM.
"Currently, only 17% of STEM employees across the nation, let alone in defence, are women," said the Army Advocate for Women in STEM, Brigadier Sara Sharkey.
"In the Army only 6% of those in STEM are women, including medics and doctors," she added.
The disparity in genders involved in STEM roles leads, according to Brigadier Sharkey, to a "huge skills gap".
"We need to balance that equation by making opportunities available to the whole of the population."
To engage young people in the subjects, the organisers have opted for a hands-on approach to demonstrating STEM opportunities.
Ewan, aged 15, said he found multiple stands interesting and he "really liked them".
The military had some great-looking kit on display and available for a hands-on demonstration.
While some of the controls do take a bit of getting used to, Favour and Jahnae, aged 13, were still fascinated
"It is interesting seeing all the different things in STEM... and how many jobs there actually are," Favour said.
Plans are already in the pipeline to make this event even bigger next year.