War horses

After just returning from the War Memorial in Canberra. My daughter found it interesting that the soldiers were not allowed to bring back their horses that many saved the soldiers lives & were great friends and many soldiers shot there own horses due to the costs to the govenment & Australias very strick quarantine laws (as quoted in the history book we purchased,) they could not return. Boy have times changed, what if they were racing stock? Although we do agree with the quarantine rules.
Explain that to an 11 yrs old whos ponies are stuck in another state from someones mistake