[mugs99]

They attended church services

George Washington never stepped inside the church. He took his wife to church on Sundays and remained in the carriage while she attended services. Some of the others who weren't Christian attended religious services as a social function. Not all Deists avoided church services like Washington and Paine. Even today, many Deists and Unitarians attend Christian services.
...

[StonyBurk]

In reading the General Orders issued by Washington of 9July1776,and May 2,1778 (to name two ) Washington did not
hope and trust ever officer and man would be Deist soldiers,
but "Christian Soldiers."and did not enjoin them to laud the more distinguished character of Deist (but did proclaim "to the distinguished Character of Patriot ,it should be our highest Glory to laud the more perfect Character of Christian." Washingotn's Prayer Book and his
letters do not suggest he was a Deist.

[Abby4116]

George Washington never stepped inside the church. He took his wife to church on Sundays and remained in the carriage while she attended services.

"Those who worshiped regularly at Christ Church include George Washington, Benjamin Franklin, Betsy Ross, Robert Morris, Absalom Jones, Benjamin Rush, John Penn (William Penn's grandson), Francis Hopkinson and many others."

According to Christ Church, Philadelphia, history of the church.