Meanwhile, Harry was quietly asking another attendee what it's like parenting two children.
Susie Stringfellow, one of the mums at the event, told Forces Network, "Having our baby so close in age to their baby, I think they were keen to chat...Harry was really quite interested in how things were with second children, as well, because we both have older children."
She went on to say, "We were trying to encourage him to have a second baby."
The talk of baby number two has also prompted some betting sites to change their odds when it comes to Meghan announcing a second pregnancy, too. Earlier this month, bookmakers.tv, sent the internet into a frenzy after it slashed the odds of Meghan announcing a second baby this year from 4/6 to 1/5.
Explaining the decision in a statement, the site said: "The odds of Meghan and Harry sharing some good news soon have taken another plunge. The latest betting definitely suggests there could be an announcement around the corner and when it comes bookies should brace themselves for another royal betting frenzy."