AN ILLUSTRATED TIMELINE OF

What happened on April 19, 1775? Explore this illustrated timeline for the full story.

BY ERICA LOME

10:30 pm

APRIL 18, 1775

On the evening of April 18, 1775, Provincial leaders in Boston learn that General Gage is sending 700 British Regulars to raid a stockpile of military supplies in Concord.

Paul Revere arranges for two lanterns to be lit in the belfry of North Church, signaling that the Regulars are heading out by water.

10:30 pm - 12:00 am

Revere and William Dawes, another alarm rider, set out, while British Regulars cross the Charles River. Both the lantern signal and additional riders serve to spread the alarm in all directions. Provincial forces begin to mobilize around the countryside.

12:00 am

Provincial leaders Samuel Adams and John Hancock receive the news and leave Lexington to avoid the Regulars. Revere and Dawes then race toward Concord but are captured by a British patrol. A new rider, Samuel Prescott, carries on and alarms the people of Concord.

1 Lantern, about 1775. Concord Museum Collection, Gift of Cummings E. Davis (1886); M400a1

2,5,7 Still images from the April 19, 1775 animation at the Concord Museum. Produced by RLMG.

3 Clock movement and dial, 1769. Concord Museum Collection, Gift of the Decorative Arts Fund with assistance of Malcolm R. Mahan (1975); F2512. Reproduction case made by William Huyett, 2020. Gift of William and Lauren Huyett. 4 Silver-hilted Sword, about 1760. Concord Museum Collection, Gift of Mrs. Chandler; A2060.1 6 Beam from the North Bridge, Concord, Massachusetts. Concord Museum Collection, Gift of the Town of Concord (1956); M2130

2:00 am - 4:30 am

The Regulars, still on the banks of the Charles River, have lost the element of surprise. They begin their march to Concord, which will take them through Lexington. Meanwhile, Lexington’s militia await their arrival at Buckman’s Tavern.

5:00 am

Drumbeats summon Lexington militia to gather on the Lexington Common as the British approach. Major John Pitcairn’s advance companies of 100 Regulars encounter Captain John Parker and his 60 men. Despite orders on both sides not to engage, a shot rings out. In response, the Regulars open fire. Seconds later, eight Provincials lay dead and ten more wounded.

The advance companies regroup and rejoin the main column of Regulars. Together, the soldiers resume the march to Concord.

9:00 am

The Provincials stationed above the North Bridge are alarmed to see smoke rising from the center of Concord. Believing that Regulars are ransacking the town, they ready for combat and march toward the bridge.

The 100 British Regulars at the bridge open fire, killing two Provincials: Isaac Davis and Abner Hosmer. Major John Buttrick orders his men to return fire – the famous “shot heard round the world.” Three minutes later, three Regulars are dead and several more wounded.

12:00 pm

Having accomplished their mission, the Regulars begin marching back to Boston. However, their path is impeded by Provincial forces who keep up an encircling fire on the main column. The march turns into a 15-mile long battle.

4:30 pm

Eventually, outnumbered two to one, the British face some of the harshest fighting of the day near present-day Arlington. Many Regulars abandon their arms to lighten their load on the return to Boston. By now, Provincial forces total 3600 men.

7:30 am

The British Regulars arrive in Concord. By then, 450 Provincial militia and minutemen have assembled near the North Bridge. The Regulars split up to secure the town’s bridges and destroy military supplies. Luckily, the Provincials had relocated most of the stockpile shortly before the raid. The Regulars set on fire or throw in the mill pond what little they find.

2:00 pm

In Lexington, the returning Regulars are joined by a relief column of 1000 Regulars. By this point, the Provincial forces have grown to over 1500 men, a number that continues to increase as militiamen from all over Massachusetts join the fray.

7:30 pm

With 243 men killed, wounded, and missing, the Regulars barely make it back to Boston by sundown. The Siege of Boston begins.

An alarm system that began with two lit lanterns summoned 20,000 Provincials from across the region. This massive force confined the British Army to Boston for 11 months, a siege that ended with George Washington’s capture of Dorchester Heights. The occupying British troops left Massachusetts in March of 1776, never to return.

See the events of April 19, 1775 unfold at the Concord Museum online and in person! The new permanent galleries tell the story of that fateful day as never before, guided by artifacts and multi-media animations. The exhibition continues online with the Museum’s new ‘Shot Heard Round the World’ microsite which was officially recognized by the U.S. Semiquincentennial Commission. Shotheardroundworld.org and concordmuseum.org

Spring is a time of rebirth, and with the melting of snow we begin to think about the blooming of flowers and the budding of trees as nature reawakens after her winter slumber. But in Concord, the arrival of spring brings to mind more warlike notions, and the sights and sounds of marching redcoats and militiamen fill the town as Concord commemorates the April 19, 1775, Battles of Lexington and Concord.

Tourists are enthralled with these figures from the past, and even lifelong Concordians enjoy seeing these breeches-clad, muskettoting visitors.

But who are these time travelers? Why do they insist on bringing the stories of our founding fathers and mothers to life? I recently had the chance to sit down and chat with two colonial living historians to find out how they came to be involved with Patriots’ Day.

For Larissa Sasgen, living history has been a part of her life since she was a child. Originally from Illinois, she was born into a reenacting family, and wore colonial clothing