Can we execute multiple profiles in the same pom.xml file - maven

Question

I have created a Maven project in Eclipse and have 2 xml files in it. I have created 2 profiles "TestNG.xml" and "TestNG2.xml" in the pom.xml file for my Maven project.
I ran the following command from command prompt
- mvn test
Expected behavior : TCs under both the TestNG.xml and TestNG2.xml files should get executed.
Actual behavior : Only TCs under TestNG2.xml file is getting executed.
NOTE :- When i am executing the .xml files individually using the below command it works fine{TestNG.xml file has been profiled as Regression in the pom.xml file}
- mvn test -PRegression
Below is the snapshot of my code from pom.xml file
<groupId>Rohit</groupId>
<artifactId>MavenProject05202020</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>MavenProject05202020</name>
<url>http://maven.apache.org</url>
<profiles>
<profile>
<id>Regression</id>
<!-- Below is MAVEN SURE FIRE PLUGIN. This will help to execute all your TCs present in your test folder{i.e.:-src/test/java}-->
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M4</version>
<configuration>
<suiteXmlFiles>
<suiteXmlFile>testng.xml</suiteXmlFile>
</suiteXmlFiles>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</profile>
<!-- Below is MAVEN SURE FIRE PLUGIN.
<profile>
<id>Smoke</id>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M4</version>
<configuration>
<suiteXmlFiles>
<suiteXmlFile>testng2.xml</suiteXmlFile>
</suiteXmlFiles>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</profile>
</profiles>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<!-- below is the dependency for Selenium project -->
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>3.8.1</version>
</dependency>
<!-- Below is the dependency for TESTNG. -->
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>7.1.0</version>
<scope>test</scope>
</dependency>
<!-- Below is the dependency for RestAPITest project -->
<dependency>
<groupId>io.rest-assured</groupId>
<artifactId>rest-assured</artifactId>
<version>4.3.0</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

Answer 1

If you just define the surefire-plugin twice, these definitions will override each other.
Instead, you need to define an <execution> in the plugin declaration and bind it to a phase. Plugins can have more than one execution in the <executions> block.