On this day 250 years ago in Philadelphia the Continental Congress adopted these resolutions:

1. Resolved, that a post be immediately taken and fortified at or near King’s bridge in the colony of New York, that the ground be chosen with a particular view to prevent the communication between the city of New York and the country from being interrupted by land.

2. Resolved, that a post be also taken in the highlands on each side of Hudson’s River and batteries erected in such manner as will most effectually prevent any vessels passing that may be sent to harass the inhabitants on the borders of said river; and that experienced persons be immediately sent to examine said river in order to discover where it will be most advisable and proper to obstruct the navigation.

3. Resolved, That the militia of New York be armed and trained and in constant readiness to act at a moments warning; and that a number of men be immediately Embodied and Kept in that city and so disposed of as to give protection to the inhabitants in case any insult should be offered by the troops, that may land there, and to prevent any attempts that may be made to gain possession of the city and interrupt its intercourse with the country.

4. Resolved, That it be left to the provincial congress of New York to determine the number of men sufficient to occupy the several posts above mentioned, and also that already recommended to be taken at or near lake George, as well as to guard the City, provided the whole do not exceed the number of three thousand men, to be commanded by such officers as shall be thereunto appointed by said provincial congress; and to be governed by such rules and regulations as shall be thereunto appointed by said provincial congress; and to be governed by such rules and regulations as shall be established by sd Congress until farther order is taken by this Congress; Provided also that if the sd provincial congress should be of opinion that the number proposed will not be sufficient for the several services above recommended, that the said Congress report their sentiments upon this subject to this Congress as soon as may be.

Source: https://americanfounding.org/entries/second-continental-congress-may-25-1775/

On this day 250 years ago in Williamsburg, Virginia, the Williamsburg Volunteer Company

Resolved, that every member in this company oblige themselves, by the ties of honour and duty to their country, to march, on the smallest warning, to any part of the continent, where the general cause of American liberty may demand their attendance, provided that they do not by such a step leave their own country in a defenceless state. Resolved, that it is the opinion of this company, that landing of any foreign troops in this country will be, at the present critical juncture of affairs, a most dangerous attack on the liberties of this country; and that this company will, therefore, keep the most watchful eye on any movement from this quarter, that they will consult their fellow countrymen in the different parts of this province on that head, and, should they find an unanimity of sentiment to prevail throughout this country respecting that particular, they are determined, with the aid and assistance of their fellow subjects, to resist all such arbitrary measures, at the expence of life and fortune.

Source: https://research.colonialwilliamsburg.org/todayIn1770s/index.cfm?SelectedMonth=05&SelectedDay=25

And on this day 250 years ago in Boston, the HMS Cerberus arrived carrying General William Howe, General Henry Clinton, and General John Burgoyne with orders for Howe to eventually replace General Gage in command of the British Army in Boston.

Sources: https://www.revolutionary-war.net/siege-of-boston/; https://www.warhistoryonline.com/war-articles/bunker-hill.html