The armed forces of the u. s. conduct military operations as a in which elements of two or more military departments participate.

Joint Force

Explanation:

According to my research on different military operations, I can say that based on the information provided within the question the US conducts military operations as a Joint Force. Like mentioned in the question this is a form of combined arms warfare on a larger, national scale, in which more than one forces from a state's army, navy, air, and special forces work together in joint operations to complement each others abilities in an operation.

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uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -