It's the first time in almost two decades that Indianapolis will host the convention.
Governor Mitch Daniels has held the ride as a fundraiser for military families since he took office. This year was his last ride as governor.
Veterans are honored each year, but veterans organizations urge people to remember the hard life many of them return to.
Similar events have been held in Indianapolis in the past.
A bill being considered at the statehouse would cut funding for some grants including the Children of Disabled Veterans.