America’s national farewell to George H.W. Bush begins Monday with the transfer of his casket aboard the presidential plane from Texas to Washington, where he will lie in state in the rotunda of the US Capitol.

The 41st US president died Friday at age 94, at his home in Houston — “a very gentle and peaceful passing,” his lifelong friend and advisor James Baker said Sunday on ABC’s “This Week.”

Bush, the only second president to see his son follow him to the Oval Office will be honored with four days of services and tributes in Washington and in Texas, where he will be buried on Thursday.

The high point of the commemorations, planned with military precision by a Pentagon task force, will come Wednesday with a state funeral at Washington National Cathedral — the first presidential funeral since Gerald Ford died in 2006.

Bush was a decorated World War II fighter pilot, former head of the Central Intelligence Agency, and vice president to Ronald Reagan before winning the White House.

President Donald Trump who has often clashed with the Bush family has declared Wednesday a national day of mourning, and said he will attend the funeral.