In honor of Presidents’ Day, the story of a president who was impeached during a time of great division: Andrew Johnson. This story is from The Post’s podcast “Presidential” with Lillian Cunningham.

How many extremists are in the military?

Post Reports is the daily podcast from The Washington Post. Unparalleled reporting. Expert insight. Clear analysis. Everything you’ve come to expect from the newsroom of The Post, for your ears. Martine Powers and Elahe Izadi are your hosts, asking the questions you didn’t know you wanted answered. Published weekdays around 5 p.m. Eastern time.